Department

Physics

Document Type

Article

Publication Date

10-6-2018

Abstract

We report the first observation of the hadronic transition Υ(4S)→η′Υ(1S), using 496  fb−1 data collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e−collider. We reconstruct the η′ meson through its decays to ρ0γ and to π+π−η, with η→γγ. We measure B(Υ(4S)→η′Υ(1S))=[3.43±0.88(stat)±0.21(syst)]×10−5, with a significance of 5.7σ.

Journal

Physical Review Letters

Journal ISSN

0031-9007

Volume

121

Digital Object Identifier (DOI)

10.1103/PhysRevLett.121.062001

Comments

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation,and DOI. Funded by SCOAP3.

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